CN203413128U

CN203413128U - Labyrinth type metal sealing gasket with multiple arc teeth

Info

Publication number: CN203413128U
Application number: CN201320531047.1U
Authority: CN
Inventors: 梁启国
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-29
Filing date: 2013-08-29
Publication date: 2014-01-29
Anticipated expiration: 2023-08-29

Abstract

The utility model discloses a labyrinth type metal sealing gasket with multiple arc teeth, and relates to a metal sealing gasket used in the fields of petrochemical engineering, electric power industry, military industry, mechanical industry, livelihood projects and the like. In order to solve the problem of poor sealing effect of the traditional metal sealing gasket, the utility model provides the labyrinth type metal sealing gasket with multiple arc teeth. The labyrinth type metal sealing gasket comprises a gasket body, wherein the upper and lower surfaces of the gasket body are respectively provided with a protruded wavy sealing line defined into a ring. The length of each sealing line of the labyrinth type metal sealing gasket is increased by about 50% as comparison with the length of each sealing line of sealing gaskets with other structures, and the reliability and safety of the labyrinth type metal sealing gasket in a using state are improved. The labyrinth type metal sealing gasket simultaneously has rigidity and flexibility so as to be capable of compensating the processing precision and mounting precision of other sealing elements. The design for the structural size of the labyrinth type metal sealing gasket as well as the design and processing for each sealing line are precisely and mathematically calculated, so that the sealing performance of the labyrinth type metal sealing gasket is far superior to that of the traditional sealing gasket.

Description

Mazy type multi sphere tooth metallic packing

Technical field

The utility model relates to a kind of metallic packing that can use in fields such as petrochemical industry, Coal Chemical Industry, power industry, war industry, mechanical industry, people's livelihood engineerings.

Background technique

In use, because of the impact of the factors such as structural design, machining accuracy, installation precision, usage safety performance has become the primary technical order of this product to gasket seal.

For many years, because static seal point leaks, a lot of industrial accidents occur, some accidents cause tremendous economic loss to country, cause casualties.Thereby design, produce, use novel metal gasket seal to become the revolutionary problem that is difficult to capture.

Existing a kind of gasket seal, is the annulus that protrusion is set in shim body, can play the effect of increase sealability by the annulus of this protrusion.Although this annulus can increase sealability to a certain extent, fact proved that sealability still can not reach desirable state.

Summary of the invention

The purpose of this utility model is to provide a kind of metallic packing with good seal performance.

Described object is achieved by the following scheme:

A kind of mazy type multi sphere tooth metallic packing, comprise shim body, the upper and lower surface of described shim body is provided with the waveform potted line that surrounds ring-type of protrusion, described waveform potted line is to be connected smoothly and to be formed by several non-isocentric circular arc, described circular arc radius of curvature is 1～30mm, arc round angle is between 0.5～60 degree, and all circular arc convex lines that surround ring-type all have identical height, and described height is 0.1～1mm.

The width of described waveform potted line is 0.5～1.5mm.

Round-corner transition between described waveform potted line and shim body.

Being positioned at surperficial waveform potted line of shim body is 2～10, is distributed in shim body different radii position.

Between adjacent two waveform potted lines, clamping has U-groove bevel, and the U-groove bevel total depth of same section is less than the thickness of shim body.

The beneficial effects of the utility model are:

1. the wall scroll length of sealing line of every other sealing structure pad of sealing lines Length Ratio of the utility model has increased closely 50%, has improved reliability and the margin of safety of using state.

2. the utility model rigidity, flexibility develop simultaneously, and can recompense to the machining accuracy of other seal element and installation precision.

3. U-shaped groove of the present utility model can guarantee high resilience under use state.

4. waveform potted line of the present utility model is a plurality of and in shim body different radii position, in use, if inner side one sealing lines leaks, its adjacent outside potted line can be dispersed by pressure, and this outside potted line plays sealing protection effect to the leakage of inner seal line simultaneously.

5. accurate mathematical calculating is all passed through in the design processing of physical dimension design of the present utility model and every sealing lines, and sealability is far superior to existing gasket seal.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the A-A sectional drawing of Fig. 1.

Fig. 3 is the structural representation that the potted line on two faces of shim body staggers mutually.

Fig. 4 is the structural representation of the waveform potted line of small curve described in embodiment one.

Fig. 5 is the structural representation of round-corner transition between waveform potted line and shim body.

Embodiment

Below in conjunction with accompanying drawing, elaborate the utility model preferred embodiment.

embodiment one

In this patent, said gasket seal is to be made of metal, material can be copper, aluminium, carbon steel, alloyed steel, stainless steel, it can carry out radial seal use at field convection cells such as petrochemical industry, Coal Chemical Industry, power industry, war industry, mechanical industry, people's livelihood engineerings, different according to concrete mounting point, the diameter range localization of gasket seal is at 20mm-2000mm.

The present embodiment provides a kind of mazy type multi sphere tooth metallic packing, with reference to Fig. 1, Fig. 2, comprise that the shim body 1(of ring is according to using locations of structures difference also may have square, rectangle, oval-shaped), the upper and lower surface of described shim body 1 is provided with the waveform potted line 2 that surrounds ring-type of protrusion, the height H that waveform potted line 2 protrudes from shim body 1 is 0.1～1mm, and the width E of waveform potted line 2 is 0.5～1mm.The upper surface of waveform potted line 2, with parallel with the surface of shim body 1, can be realized sealing well like this.

This patent model utility people is through great many of experiments and calculating, between the height of discovery potted line and sealability, there is direct relation, when potted line height is too low, rigidity crosses that can not to make by force gasket seal have good compensatory, when potted line is too high, the impact force of pressure produces the Security that unstability can reduce gasket seal; Therefore model utility people finally show that the height when potted line is 0.1～1mm, and it all has optimum efficiency in sealability or in Security.Described in the present embodiment, between the height of potted line and the thickness of shim body, be the relation of 1:4.

The width of waveform potted line 2 also affects sealability to a certain extent, and this is because potted line will be held good rigidity and elasticity, and therefore, it is 0.5～1.5mm that this patent requires the width of waveform potted line.

In order to increase better sealing effect, this patent requires round-corner transition between waveform potted line and shim body, and as shown in Figure 5, the edge of round-corner transition can effectively reduce the stress under pressured state, thereby provides safeguard for sealability increase.

In order to make sealability reach the effect of insurance more, it is 2～10 that this patent requires to be positioned at lip-deep waveform potted line of shim body, all potted lines are distributed in shim body different radii position, as shown in Figure 1, that is to say, all potted lines are the shape of large snare ringlet, within certainly pressure is sealed in ringlet.When having pressure to break through the potted line of innermost circle, the pressure between first lap and the second circle is far smaller than the pressure of innermost circle liquid, and now the potted line of the second circle can effectively be tackled pressure, thereby reaches excellent sealing effect.

Structure as described before, because the number of potted line is a plurality of, therefore the space between adjacent two waveform potted lines can form U-groove bevel, in order to be unlikely to make the intensity of the effect of altitude shim body of potted line, during use, preferably make the U-groove bevel total depth of same section be less than the thickness of shim body.In addition, preferred version during use is that the potted line on two faces of shim body staggers mutually, as shown in Figure 3, and to improve use elasticity.

Described waveform potted line 2 is to be connected smoothly and to be formed by several non-isocentric circular arc, the radius of curvature R of described circular arc is 1～30mm, and arc round angle θ is between 0.5～60 degree, and all circular arcs that surround ring-type all have identical height, described height as previously mentioned, is 0.1～1mm.This patent limits the radius of curvature R of circular arc within permission range, be because amount of curvature with realize model utility object and have direct relation, if radius of curvature too small (as shown in Figure 4), has reduced the vertical angle of potted line and pressure medium, affect sealing effect; If radius of curvature is excessive, potted line can not form good effective compensation, can greatly affect sealability.This patent limits arc round angle θ between 0.5～60 degree, and when reality is used, this angle can be adjusted according to the diameter of shim body 1, and in general, shim body diameter is larger, and this arc round angle θ should be less.

embodiment two

Described in the present embodiment, mazy type multi sphere tooth metallic packing is applied on the static seal point of process pipe and equipment, and material is stainless steel material.On two surfaces of shim body, 3 circle waveform potted lines are set respectively, the circular arc radius of curvature that forms waveform potted line is 18mm, and arc round angle is 20 degree, and shim body thickness is 4mm, and the height of waveform potted line is 0.5mm, and width is 1.5mm.Described in employing the present embodiment, gasket seal seals on mesohigh equipment, and after testing, sealability is better than the metallic shim of other form.

Contrasting used sheet gasket structure with gasket seal described in the present embodiment is, circular seal gasket body thickness is 4mm, and it is leg-of-mutton potted line that two surface is provided with longitudinal section, arbitrfary point, and sealing line has 4 circles, and the height of potted line is 1mm.Adopt described gasket seal to seal on mesohigh equipment, after testing, sealability is lower than the metallic shim of this patent.

Above-mentioned mode of execution does not just limit its protection domain to the exemplary illustration of this patent; those skilled in the art can also carry out part to it and change; as long as no the Spirit Essence that exceeds this patent, be all considered as the replacement that is equal to this patent, all within the protection domain of this patent.

Claims

1. a mazy type multi sphere tooth metallic packing, comprise shim body, it is characterized in that the upper and lower surface of described shim body is provided with the waveform potted line that surrounds ring-type of protrusion, described waveform potted line is to be connected smoothly and to be formed by several non-isocentric circular arc, described circular arc radius of curvature is 1～30mm, arc round angle is between 0.5～60 degree, and all circular arc convex lines that surround ring-type all have identical height, and described height is 0.1～1mm.

2. mazy type multi sphere tooth metallic packing according to claim 1, the width that it is characterized in that described waveform potted line is 0.5～1.5mm.

3. mazy type multi sphere tooth metallic packing according to claim 1, is characterized in that round-corner transition between described waveform potted line and shim body.

4. according to the mazy type multi sphere tooth metallic packing described in claim 1,2 or 3, it is characterized in that being positioned at surperficial waveform potted line of shim body is 2～10, is distributed in shim body different radii position.

5. mazy type multi sphere tooth metallic packing according to claim 4, is characterized in that between adjacent two waveform potted lines, clamping has U-groove bevel, and the U-groove bevel total depth of same section is less than the thickness of shim body.